Method for preparing composite floor core material using bark of dahurian larch as raw material

Abstract

The invention discloses a preparation method of a composite floor core material taking larch bark as a raw material, and belongs to a manufacturing method of floor substrates. The preparation method solves the problems of deficient forest resources, the low utilization rate and serious waste of the larch. The preparation method comprises the following steps: (1) crushing the larch bark into small pieces; (2) drying the small pieces obtained in the step (1) until the water content thereof reaches 3-5%; (3) evenly blending a phenolic resin adhesive and the small pieces of the larch bark in an adhesive blender, wherein, the adhesive application amount is 8-10% of the small pieces of the larch bark based on weight percentage; and (4) performing single layer structural felting and hot pressing on the small pieces of the bark which are applied with the adhesive by a felting machine to prepare the floor core material taking the larch bark as the raw material. The floor core material saves wood resources, improve the utilization rate of the larch bark, have a thermal insulation property better than the wood as the larch bark contains a cork layer with small thermal conductivity, and has low thermal conductivity and excellent damping and acoustic insulation properties.

Description

technical field [0001] The invention relates to a preparation method of a floor substrate. Background technique [0002] With the vigorous development of my country's economy and the improvement of residents' living standards, the enthusiasm for real estate and decoration remains high throughout the country, which has brought huge demand to my country's wood flooring market. Wooden floor has become a hot spot among hot spots. It has become the first-selected material for people's floor decoration with its outstanding advantages such as comfortable feet, natural warmth, warm in winter and cool in summer, noble and elegant. my country is already a big producer of wood flooring, and is striding forward to a strong producer. According to incomplete statistics, the total sales volume of various types of wood flooring in China last year was about 220 million square meters, a year-on-year increase of 35%, and it has leapt to the first place in the international floor sales market,...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the contradiction of the shortage of existing forest resources, the utilization rate of larch bark is low and the waste is serious, while the existing floor has low thermal insulation performance, thermal conduct...